I need a web-based dashboard that lets me monitor core business analytics at a glance. The focus is on clear, responsive charts and graphs that track two critical metrics: sales performance and website traffic. The data will come from sources I can expose through REST APIs or flat files, so the build should accommodate both. I’m open to the charting library you prefer—whether that’s D3.js, Chart.js, Highcharts, or another modern JavaScript option—so long as the visuals load quickly and can be filtered by date range, product line, and traffic channel without page refreshes. Please structure the project so future datasets can be plugged in with minimal code changes. A lightweight admin panel or straightforward config file approach is fine; I just don’t want to wade through code every time a new KPI is added. Deliverables • A responsive single-page dashboard served from a small Node, Django, or similar back-end of your choice • Interactive charts for sales performance and website traffic, each with drill-down and export to CSV/PDF • Clean, commented source code and brief setup documentation Acceptance criteria: the dashboard must render correctly on the latest Chrome, Firefox, and Edge, and initial page load should stay under three seconds using sample datasets I’ll provide.